Negative dye-containing curable composition, color filter and method of producing the same

1 . A negative dye-containing curable composition, comprising (A) an organic solvent-soluble dye, (B) a photopolymerization initiator, (C) a radical-polymerizable monomer, and (D) an organic solvent, wherein the composition further comprises (X) an inorganic metal salt that is different from the organic solvent-soluble dye (A), and the content of the inorganic metal salt (X) is 0.1 mass % or less with respect to the total solid content of the composition.

2 . The negative dye-containing curable composition according to claim 1 , wherein the content of the inorganic metal salt (X) is 0.01 mass % or less with respect to the total solid content of the composition.

3 . The negative dye-containing curable composition according to claim 1 , further comprising (E) a binder resin.

4 . The negative dye-containing curable composition according to claim 2 , further comprising (E) a binder resin.

5 . The negative dye-containing curable composition according to claim 1 , wherein the radical-polymerizable monomer (C) comprises at least one additionally polymerizable ethylenic double bond and has a boiling point of 100° C. or above at atmospheric pressure.

6 . The negative dye-containing curable composition according to claim 5 , wherein the radical-polymerizable monomer (C) is a multifunctional (metha)acryl compound.

7 . The negative dye-containing curable composition according to claim 3 , wherein the binder resin is an alkali-soluble resin.

8 . The negative dye-containing curable composition according to claim 1 , wherein the organic solvent-soluble dye is a mixture of two or more dyes whose respective light absorption properties are different.

9 . The negative dye-containing curable composition according to claim 1 , wherein the photopolymerization initiator (B) is at least one compound selected from the group consisting of actively halogenized compounds such as diazole compounds and triazine compounds; 3-aryl-substituted coumarin compounds; lophine dimers; benzophenone compounds; acetophenone compounds and derivatives thereof; cyclopentadiene-benzene-iron complexes and salts thereof; and oxime compounds.

10 . The negative dye-containing curable composition according to claim 9 , wherein at least one of the photopolymerization initiators (B) is a triazine or an oxime photopolymerization initiator.

11 . A color filter, produced by using a negative dye-containing curable composition comprising (A) an organic solvent-soluble dye, (B) a photopolymerization initiator, (C) a radical-polymerizable monomer, and (D) an organic solvent, wherein the composition further comprises (X) an inorganic metal salt that is different from the organic solvent-soluble dye (A), and the content of the inorganic metal salt (X) is 0.1 mass % or less with respect to the total solid content of the composition.

12 . A method of producing a color filter, comprising:

applying a negative dye-containing curable composition comprising (A) an organic solvent-soluble dye, (B) a photopolymerization initiator, (C) a radical-polymerizable monomer, and (D) an organic solvent, wherein the composition further comprises (X) an inorganic metal salt that is different from the organic sovent-soluble dye (A), and the content of the inorganic metal salt (X) is 0.1 mass % or less with respect to the total solid content of the composition, onto a substrate to form a radiation sensitive composition layer;

exposing the applied layer through a mask; and

developing the layer to form a negative colored pattern.

13 . The method of producing a color filter according to claim 12 , wherein the method further comprises curing the patterned image by heating and/or exposing.

14 . The method of producing a color filter according to claim 12 , wherein pattern forming is repeated according to the number of colors.

15 . The method of producing a color filter according to claim 13 , wherein curing is repeated according to the number of colors.